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Agreenhouseeffectwillraisetheearth’’stemperatureenoughbytheyear2100tocausedramaticclimatechangesincreasesealevelsanddisruptfoodproductionUnitedStatesscientistssaidthisweek. Theearth’’satmosphereisheatingataratethatcouldmeantemperaturerisesoftwodegreescentigradebythemiddleofthe21stcenturyandfivedegreescentigradebytheyear2100accordingtoareportissuedbytheUSgovernment’’sEnvironmentalProtectionAgencyEPA. SubstantialincreasesinglobalwarmingmayoccursoonerthanmostofuswouldliketobelievetheEPAsaid. Theagencysaidthefirsteffectsmightbefeltasearlyas1990becausetemperatureswouldberisingmorethanseventimesfastereachdecadebetweennowandtheyear2100thantheyhadbeenforthepast100years. TemperatureincreasesarelikelytobeaccompaniedbydramaticchangesinprecipitationandstormpatternsandariseinglobalaveragesealeveltheEPAreportsaid. Asaresulttheagencysaidagriculturalconditionswillbesignificantlyalteredenvironmentalandeconomicsystemspotentiallydisrupted. TheEPAreportsaidtheburningoffossilfuelswasdirectlyresponsibleformostoftheatmospherebuild-upofcarbondioxidebutthecurrentconcentrationissogreatthatevenaworldwidebanontheuseofsuchfuelswoulddelaythewarmingeffectforonlyafewyears. Awarmerclimatewillraisesealevelsbyheatingandexpandingtheworld’’soceansandcausingglacierstomelttheEPAsaid. Theagencyestimatedthatsealevelscouldriseanythingbetween48to380cminthenext120years. Anincreaseofeven48cmcouldfloodorcausestormdamagetomanyofthemajorportsoftheworlddisrupttransportationnetworksalterunderwaterecologysystemsandcausemajorshiftsinlanddevelopmentpatterns. Onestudycitedinthereportsuggestedthatiftheaverageglobaltemperatureroseby2.5degreescentigraderegionalclimaticconditionsmightbesimilartothoseduringthelastinterglacialperiod120000yearsago. Duringthisperiodoceanswerefivetosevenmetreshigherthantoday’’sfloodingtheshoresofEuropeandwesternSiberiaandmakingScandinaviaanisland. Theagencysaidthatwhilethewarmingtrendcouldhavesomebeneficialeffectssuchasreducingheatingcostsandimprovingclimateandgrowingseasonsinsomepartsoftheworldtherewouldbedifficultyinredirectingnationaleconomiestoadapttothenewclimatepatterns. TheEPAsaiditseemedunlikelythatthenationsoftheworldwouldreachaconsensusonsteptoreducecarbondioxideemissions.Insteaditurgedmoreresearchonthegreenhouseeffectandstressedtheneedforbetterplanningtocopewiththechangesthewarmingtrendisexpectedtoproduce. WhichofthefollowingisincludedintheEPAreport
静脉延续性血栓是由①②和③部分构成的
AradiativeforcingisanychangeimposedontheEarththataffecttheplanetaryenergybalance.Radiativeforcingsincludechangesingreenhousegasessuchascarbondioxideandozoneaerosolsintheatmospheresolarirradianceandsurfacereflectivity.Aforcingmayresultfromeitheranaturalorananthropogeniccauseorfrombothasinthecaseofatmosphericaerosolconcentrationswhichcanbealteredeitherbyvolcanicactionortheburningoffossilfuels.Radiativeforcingsaretypicallyspecifiedforthepurposeoftheoreticalglobalclimatesimulations.Incontrastradiativefeedbacksareenvironmentalchangesresultingfromclimatechangesandarecalculatedfromscientificobservation.Radiativefeedbacksincludechangesinsuchphenomenaascloudsatmosphericwatervaporsea-icecoverandsnowcover. Theinterplaybetweenforcingsandfeedbackscanbequitecomplex.Forexampleanincreaseintheconcentrationofatmosphericwatervaporincreasessolarirradiancetherebywarmingtheatmosphereandinturnincreasingevaporationandtheconcentrationofatmosphericwatervapor.Arelatedexampleofthiscomplexinterplayalsoshowstheuncertaintyoffutureclimaticchangesassociatedwithforcingsandfeedbacks.ScientistsareunsurehowthereductionofozonewillultimatelyaffectcloudsandinturntheEarthtemperature.Cloudstrapoutgoingcoolingradiationtherebyprovidingawarminginfluence.Howevertheyalsoreflectincomingsolarradiationandthusprovideacoolinginfluence.CurrentsmeasurementsindicatethattheneteffectofcloudsistocooltheEarth.Howeverscientistsdonotknowhowthebalancemightshiftinthefutureascloudformationanddispersionareaffectedbyozonereduction. Contributingtothisuncertaintyisthecomplexityofthemechanismsatworkintheprocessofozonereduction.Theamountofradiationreachingtheearth’’ssurfaceandtheamountofreradiatedradiationthatistrappedbythegreenhouseeffectinfluencetheEarth’’stemperatureinoppositedirections.Bothmechanismsareaffectedbytheverticaldistributionofozone.Alsotherelativeimportanceofthesetwocompetingmechanismsdependsonthealtitudeatwhichozonechangesoccur.InarecentNASA-sponsoredaircraftstudyoftheAntarcticozoneholechlorinemonoxidewasmeasuredatvaryingaltitudes.Themeasurementssuggestthatchlorineplaysagreaterroleandoxidesofnitrogenalesserrolethanpreviouslythoughtinthedestructionofozoneintheloweratmosphere.Thestudyconcludedthatsimultaneoushigh-resolutionmeasurementsatmanydifferentaltitudesonthescaleof0.1kilometerinverticalextentarenecessarytodiagnosetheoperativemechanisms.Thesefindingshavecalledintoquestionconventionalexplanationsforozonereductionwhichfailtoadequatelyaccountforthenewevidence.NASA=NationalAeronauticsandSpaceAdministration国家航空航天局 TheNASA-sponsoredstudyoftheozonehole
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WildBillDonovanwouldhavelovedtheIntemet.TheAmericanspymasterwhobuilttheOfficeofStrategicServicesinWorldWarⅡandlaterlaidtherootsfortheCIAwasfascinatedwithinformation.Donovanbelievedinusingwhatevertoolscametohandinthegreatgameofespionage--spyingasaprofession.ThesedaystheNetwhichhasalreadyre-madesucheverydaypastimesasbuyingbooksandsendingmailisreshapingDonovan’’svocationaswell. Thelatestrevolutionisn’’tsimplyamatterofgentlemenreadingothergentlemen’’se-mail.Thatkindofelectronicspyinghasbeengoingonfordecades.InthepastthreeorfouryearstheWorldWideWebhasgivenbirthtoawholeindustryofpoint-and-clickspying.Thespookscallitopen-sourceintelligenceandastheNetgrowsitisbecomingincreasinglyinfluential.In1995theCIAheldacontesttoseewhocouldcompilethemostdataaboutBumndi.ThewinnerbyalargemarginwasatinyVirginiacompanycalledOpenSourceSolutionswhoseclearadvantagewasitsmasteryoftheelectronicworld. AmongthefirmsmakingthebiggestsplashinthisnewworldisStraiffordInc.aprivateintelligence-analysisfirmbasedinAustinTexas.StraiffordmakesmoneybysellingtheresultsofspyingcoveringnationsfromChiletoRussiatocorporationslikeenergy-servicesfirmMcDermottInternational.Manyofitspredictionsareavailableonlineatwww.straitfordcom. StraiffordPresidentGeorgeFriedmansaysheseestheonlineworldasakindofmutuallyreinforcingtoolforbothinformationcollectionanddistributionaspymaster’’sdream.LastweekhisfirmwasbusyvacuumingupdatabitsfromthefarcomersoftheworldandpredictingacrisisinUkraine.Assoonasthatreportrunswe’’IIsuddenlyget500newIntemetsinge-upsfromUkrainesaysFriedmanaformerpoliticalscienceprofessor.Andwe’’11hearbackfromsomeofthem.Open-sourcespyingdoeshaveitsrisksofcoursesinceitcanbedifficulttotellgoodinformationfrombad.That’’swhereStraiffordearnsitskeep. Fridmanreliesonaleanstaffof20inAustin.Severalofhisstaffmembershavemilitary-intelligencebackgrounds.Heseesthefirm’’soutsiderstatusasthekeytoitssuccess.Straifford’’sbriefsdon’’tsoundliketheusualWashingtonback-and-forthingwherebyagenciesavoiddramaticdeclarationsonthechancetheymightbewrong.StraitfordsaysFriedmantakesprideinitsindependentvoice. TheemergenceoftheNethas
Therelationoflanguageandmindhasinterestedphilosophersformanycenturies.61TheGreeksassumedthatthestructureoflanguagehadsomeconnectionwiththeprocessofthoughtwhichtookrootinEuropelongbeforepeoplerealizedhowdiverselanguagescouldbe. Onlyrecentlydidlinguistsbegintheseriousstudyoflanguagesthatwereverydifferentfromtheirown.Twoanthropologist-linguistsFranzBoasandEdwardSapirwerepioneersindescribingmanynativelanguagesofNorthandSouthAmericaduringthefirsthalfofthetwentiethcentury.62Weareobligedtothembecausesomeoftheselanguageshavesincevanishedasthepeopleswhospokethemdiedoutorbecameassimilatedandlosttheirnativelanguages.Otherlinguistsintheearlierpartofthiscenturyhoweverwhowerelesseagertodealwithbizarredatafromexoticlanguagewerenotalwayssograteful.63ThenewlydescribedlanguageswereoftensostrikinglydifferentfromthewellstudiedlanguagesofEuropeandSoutheastAsiathatsomescholarsevenaccusedBoasandSapiroffabricatingtheirdata.NativeAmericanlanguagesareindeeddifferentsomuchsoinfactthatNavajocouldbeusedbytheUSmilitaryasacodeduringWorldWarIItosendsecretmessages. Sapir’’spupilBenjaminLeeWhorfcontinuedthestudyofAmericanIndianlanguages.64BeinginterestedintherelationshipoflanguageandthoughtWhorfdevelopedtheideathatthestructureoflanguagedeterminesthestructureofhabitualthoughtinasociety.Hereasonedthatbecauseitiseasiertoformulatecertainconceptsandnotothersinagivenlanguagethespeakersofthatlanguagethinkalongonetrackandnotalonganother.65Whorfcametobelieveinasortoflinguisticdeterminismwhichinitsstrongestformstatesthatlanguageimprisonsthemindandthatthegrammaticalpatternsinalanguagecanproducefar-reachingconsequencesforthecultureofasociety.LaterthisideabecametobeknownastheSapir-Whorfhypothesisbutthistermissomewhatinappropriate.AlthoughbothSapirandWhorfemphasizedthediversityoflanguagesSapirhimselfneverexplicitlysupportedthenotionoflinguisticdeterminism.
胃溃疡最常见的并发症是①②③④
最可能引起高血压的急性肾脏疾病是
Newsreportsoftenfocusondisputesamongscientistsoverthevalidityofpreliminaryuntesteddatahypothesesandmodelswhichbydefinitionaretentative.Thisaspectofscience-1becauseithasnotbeenwidely2andaccepted-iscalledfrontierscience.Themedia3tofocusonfrontiersciencebecauseitsso-calledbreakthroughsmakegoodnewsstories.Justbecausesomethingisinthe4offrontierscience5doesnotmeanthatitisn’’tworthyofseriousconsideration;6suchmattersneedfurtherstudytodeterminetheir7. 8contrastconsensusscienceconsistsofdatamodelstheoriesandlawsthatarewidelyaccepted.Thisaspectofscienceisveryreliablebutis9considerednewsworthy.Thetroubleisthatthewordscienceisusedto10bothfrontierandconsensussciencewithout11Themediapreference12frontiersciencegivesthepublicthe13impressionthatfrontierscience14verycertainconclusionswhichmayormaynotbecorrect. However15somefrontierscienceislatershowntobeunreliablemembersofthepublicoftenfalsely16thatconsensusscienceisalsoquiteuncertain.Weneedtotakebothfrontierandconsensusscience17butrecognizetheirdifferences.Onewaytofindoutwhatscientistsgenerallyagree18istoseekoutreportsbyscientificbodiesthatattemptto19consensusin20areasofscienceandtechnology.
TowhatextentaretheunemployedfailingintheirdutytosocietytoworkandhowfarhastheStateanobligationtoensurethattheyhaveworktodo Itisbynowincreasinglyrecognizedthatworkersmaybethrownoutofworkbyindustrialforcesbeyondtheircontrolandthattheunemployedareinsomesensepayingthepriceoftheeconomicprogressoftherestofthecommunity.Butconcernwithunemploymentandtheunemployedvariessharply.Theissuesofdutyandresponsibilitywerereopenedandrevitalizedbytheunemploymentscareof1971-2.RisingunemploymentandincreasedsumspaidoutinbenefitstotheworklesshadreawakenedcontroversieswhichhadbeeninactiveduringmostoftheperiodoffulleremploymentsincethewarendedtheDepression.Itlookedasthoughinfuturetherewouldagainbetoolittleworktogoroundsotherewereargumentsabouthowtoproducemoreworkhowtheavailableworkshouldbesharedoutandwhowasresponsibleforunemploymentandtheunemployed. In1972therewerecriticswhosaidthattheState’’sactioninallowingunemploymenttorisewasafaithlessactabreakingofthesocialcontractbetweensocietyandtheworker.Yetinthemainanycontributionbyemployerstounemployment―suchaslayingoffworkersinordertointroducetechnologicalchangesandmaximizeprofits―tendedtobeignored.Anditwastheunemployedwhowereaccusedoffailingtohonourthesocialcontractbynotfulfillingtheirdutytosocietytowork.Inspiteofgeneralconcernatthescaleoftheunemploymentstatisticswhentheunemployedwereconsideredasindividualstheytendedtoattractscornandthreatsofpunishment.Theircapacitiesandmotivationasworkersandtheirvalueasmembersofsocietybecamesuspect.OfallthemythsoftheWelfareStatestoriesofthework-shyandborrowershavebeentheleastwell-foundedonevidenceyettheyhaveprovedthemostpersistent.TheunemployedwereaccusedofbeingresponsiblefortheirownworklessconditionanddoubtswereexpressedabouttheState’’sobligationeithertoprovidethemwiththesecurityofworkortosupportthemthroughSocialSecurity. Underlyingtheargumentsaboutunemploymentandtheunemployedisabasicdisagreementaboutthenatureandmeaningofworkinsociety.TowhatextentcanorshouldworkberegardedasaservicenotonlyperformedbytheworkerforsocietybutalsomadesecurefortheworkerbytheStateandsupportedifnecessaryAndapartfromcasharetheresocialpressuresandsatisfactionswhichcauseindividualstoseekandkeepwork.sothattheworklessneedworkratherthanjustcash Whattheauthorproposestoexamineiswhether
Newsreportsoftenfocusondisputesamongscientistsoverthevalidityofpreliminaryuntesteddatahypothesesandmodelswhichbydefinitionaretentative.Thisaspectofscience-1becauseithasnotbeenwidely2andaccepted-iscalledfrontierscience.Themedia3tofocusonfrontiersciencebecauseitsso-calledbreakthroughsmakegoodnewsstories.Justbecausesomethingisinthe4offrontierscience5doesnotmeanthatitisn’’tworthyofseriousconsideration;6suchmattersneedfurtherstudytodeterminetheir7. 8contrastconsensusscienceconsistsofdatamodelstheoriesandlawsthatarewidelyaccepted.Thisaspectofscienceisveryreliablebutis9considerednewsworthy.Thetroubleisthatthewordscienceisusedto10bothfrontierandconsensussciencewithout11Themediapreference12frontiersciencegivesthepublicthe13impressionthatfrontierscience14verycertainconclusionswhichmayormaynotbecorrect. However15somefrontierscienceislatershowntobeunreliablemembersofthepublicoftenfalsely16thatconsensusscienceisalsoquiteuncertain.Weneedtotakebothfrontierandconsensusscience17butrecognizetheirdifferences.Onewaytofindoutwhatscientistsgenerallyagree18istoseekoutreportsbyscientificbodiesthatattemptto19consensusin20areasofscienceandtechnology.
AradiativeforcingisanychangeimposedontheEarththataffecttheplanetaryenergybalance.Radiativeforcingsincludechangesingreenhousegasessuchascarbondioxideandozoneaerosolsintheatmospheresolarirradianceandsurfacereflectivity.Aforcingmayresultfromeitheranaturalorananthropogeniccauseorfrombothasinthecaseofatmosphericaerosolconcentrationswhichcanbealteredeitherbyvolcanicactionortheburningoffossilfuels.Radiativeforcingsaretypicallyspecifiedforthepurposeoftheoreticalglobalclimatesimulations.Incontrastradiativefeedbacksareenvironmentalchangesresultingfromclimatechangesandarecalculatedfromscientificobservation.Radiativefeedbacksincludechangesinsuchphenomenaascloudsatmosphericwatervaporsea-icecoverandsnowcover. Theinterplaybetweenforcingsandfeedbackscanbequitecomplex.Forexampleanincreaseintheconcentrationofatmosphericwatervaporincreasessolarirradiancetherebywarmingtheatmosphereandinturnincreasingevaporationandtheconcentrationofatmosphericwatervapor.Arelatedexampleofthiscomplexinterplayalsoshowstheuncertaintyoffutureclimaticchangesassociatedwithforcingsandfeedbacks.ScientistsareunsurehowthereductionofozonewillultimatelyaffectcloudsandinturntheEarthtemperature.Cloudstrapoutgoingcoolingradiationtherebyprovidingawarminginfluence.Howevertheyalsoreflectincomingsolarradiationandthusprovideacoolinginfluence.CurrentsmeasurementsindicatethattheneteffectofcloudsistocooltheEarth.Howeverscientistsdonotknowhowthebalancemightshiftinthefutureascloudformationanddispersionareaffectedbyozonereduction. Contributingtothisuncertaintyisthecomplexityofthemechanismsatworkintheprocessofozonereduction.Theamountofradiationreachingtheearth’’ssurfaceandtheamountofreradiatedradiationthatistrappedbythegreenhouseeffectinfluencetheEarth’’stemperatureinoppositedirections.Bothmechanismsareaffectedbytheverticaldistributionofozone.Alsotherelativeimportanceofthesetwocompetingmechanismsdependsonthealtitudeatwhichozonechangesoccur.InarecentNASA-sponsoredaircraftstudyoftheAntarcticozoneholechlorinemonoxidewasmeasuredatvaryingaltitudes.Themeasurementssuggestthatchlorineplaysagreaterroleandoxidesofnitrogenalesserrolethanpreviouslythoughtinthedestructionofozoneintheloweratmosphere.Thestudyconcludedthatsimultaneoushigh-resolutionmeasurementsatmanydifferentaltitudesonthescaleof0.1kilometerinverticalextentarenecessarytodiagnosetheoperativemechanisms.Thesefindingshavecalledintoquestionconventionalexplanationsforozonereductionwhichfailtoadequatelyaccountforthenewevidence.NASA=NationalAeronauticsandSpaceAdministration国家航空航天局 Scientistscouldmoreaccuratelypredicttheextentanddirectionofgreenhouseeffectiftheywereto
Newsreportsoftenfocusondisputesamongscientistsoverthevalidityofpreliminaryuntesteddatahypothesesandmodelswhichbydefinitionaretentative.Thisaspectofscience-1becauseithasnotbeenwidely2andaccepted-iscalledfrontierscience.Themedia3tofocusonfrontiersciencebecauseitsso-calledbreakthroughsmakegoodnewsstories.Justbecausesomethingisinthe4offrontierscience5doesnotmeanthatitisn’’tworthyofseriousconsideration;6suchmattersneedfurtherstudytodeterminetheir7. 8contrastconsensusscienceconsistsofdatamodelstheoriesandlawsthatarewidelyaccepted.Thisaspectofscienceisveryreliablebutis9considerednewsworthy.Thetroubleisthatthewordscienceisusedto10bothfrontierandconsensussciencewithout11Themediapreference12frontiersciencegivesthepublicthe13impressionthatfrontierscience14verycertainconclusionswhichmayormaynotbecorrect. However15somefrontierscienceislatershowntobeunreliablemembersofthepublicoftenfalsely16thatconsensusscienceisalsoquiteuncertain.Weneedtotakebothfrontierandconsensusscience17butrecognizetheirdifferences.Onewaytofindoutwhatscientistsgenerallyagree18istoseekoutreportsbyscientificbodiesthatattemptto19consensusin20areasofscienceandtechnology.
Newsreportsoftenfocusondisputesamongscientistsoverthevalidityofpreliminaryuntesteddatahypothesesandmodelswhichbydefinitionaretentative.Thisaspectofscience-1becauseithasnotbeenwidely2andaccepted-iscalledfrontierscience.Themedia3tofocusonfrontiersciencebecauseitsso-calledbreakthroughsmakegoodnewsstories.Justbecausesomethingisinthe4offrontierscience5doesnotmeanthatitisn’’tworthyofseriousconsideration;6suchmattersneedfurtherstudytodeterminetheir7. 8contrastconsensusscienceconsistsofdatamodelstheoriesandlawsthatarewidelyaccepted.Thisaspectofscienceisveryreliablebutis9considerednewsworthy.Thetroubleisthatthewordscienceisusedto10bothfrontierandconsensussciencewithout11Themediapreference12frontiersciencegivesthepublicthe13impressionthatfrontierscience14verycertainconclusionswhichmayormaynotbecorrect. However15somefrontierscienceislatershowntobeunreliablemembersofthepublicoftenfalsely16thatconsensusscienceisalsoquiteuncertain.Weneedtotakebothfrontierandconsensusscience17butrecognizetheirdifferences.Onewaytofindoutwhatscientistsgenerallyagree18istoseekoutreportsbyscientificbodiesthatattemptto19consensusin20areasofscienceandtechnology.
AradiativeforcingisanychangeimposedontheEarththataffecttheplanetaryenergybalance.Radiativeforcingsincludechangesingreenhousegasessuchascarbondioxideandozoneaerosolsintheatmospheresolarirradianceandsurfacereflectivity.Aforcingmayresultfromeitheranaturalorananthropogeniccauseorfrombothasinthecaseofatmosphericaerosolconcentrationswhichcanbealteredeitherbyvolcanicactionortheburningoffossilfuels.Radiativeforcingsaretypicallyspecifiedforthepurposeoftheoreticalglobalclimatesimulations.Incontrastradiativefeedbacksareenvironmentalchangesresultingfromclimatechangesandarecalculatedfromscientificobservation.Radiativefeedbacksincludechangesinsuchphenomenaascloudsatmosphericwatervaporsea-icecoverandsnowcover. Theinterplaybetweenforcingsandfeedbackscanbequitecomplex.Forexampleanincreaseintheconcentrationofatmosphericwatervaporincreasessolarirradiancetherebywarmingtheatmosphereandinturnincreasingevaporationandtheconcentrationofatmosphericwatervapor.Arelatedexampleofthiscomplexinterplayalsoshowstheuncertaintyoffutureclimaticchangesassociatedwithforcingsandfeedbacks.ScientistsareunsurehowthereductionofozonewillultimatelyaffectcloudsandinturntheEarthtemperature.Cloudstrapoutgoingcoolingradiationtherebyprovidingawarminginfluence.Howevertheyalsoreflectincomingsolarradiationandthusprovideacoolinginfluence.CurrentsmeasurementsindicatethattheneteffectofcloudsistocooltheEarth.Howeverscientistsdonotknowhowthebalancemightshiftinthefutureascloudformationanddispersionareaffectedbyozonereduction. Contributingtothisuncertaintyisthecomplexityofthemechanismsatworkintheprocessofozonereduction.Theamountofradiationreachingtheearth’’ssurfaceandtheamountofreradiatedradiationthatistrappedbythegreenhouseeffectinfluencetheEarth’’stemperatureinoppositedirections.Bothmechanismsareaffectedbytheverticaldistributionofozone.Alsotherelativeimportanceofthesetwocompetingmechanismsdependsonthealtitudeatwhichozonechangesoccur.InarecentNASA-sponsoredaircraftstudyoftheAntarcticozoneholechlorinemonoxidewasmeasuredatvaryingaltitudes.Themeasurementssuggestthatchlorineplaysagreaterroleandoxidesofnitrogenalesserrolethanpreviouslythoughtinthedestructionofozoneintheloweratmosphere.Thestudyconcludedthatsimultaneoushigh-resolutionmeasurementsatmanydifferentaltitudesonthescaleof0.1kilometerinverticalextentarenecessarytodiagnosetheoperativemechanisms.Thesefindingshavecalledintoquestionconventionalexplanationsforozonereductionwhichfailtoadequatelyaccountforthenewevidence.NASA=NationalAeronauticsandSpaceAdministration国家航空航天局 Welearnfromthetextthattheburningofpetrol
Everythingseemedtohavebecomea weaponofwar.Ourenemieshad1themostfamiliar objects2usturnedshavingkitsintoholstersand airplanes3missilesandsoccercoachesandnewlywedsinto involuntarysuicidebombers.Soitwas4thePresidentand hisgeneralstoplottheresponse.Thatisbecauseweare 5oneenemybuttwo:oneunseentheotherinside.Terroron thisscale6towreckthewayweliveourlives-makeus flinchwhenasirensounds7whenadoorslamsandthink twicebeforedeciding8wereallyhavetotakeaplane.If wefaltertheywin9theyneverplantanotherbomb.So aftertheearlyhelplessnesswhatcanIdoI’vealreadygivenblood-people startedtorealizethat10theycoulddowasexactlyas preciselyaspossible11theywouldhavedoneifall this12.Thatwasthespirit13 inNewYorkandWashingtonandallacrossthecountryfaithandfear andresolveinatightbraid.Becausethekillerswhohateusdidthe 14nothingisunthinkablenow.Aplumeofgrillsmoke ventingfromaManhattansteakhouse15theevacuationof midtownofficetowers.AfterthePentagon16generals calledtheirfamiliesandtoldthem17thewateritcould bepoisoned.Salesofgunsandgasmasksspiked.TheNationalFootballLeague 18itsgamesforthefirsttimeever;bombscaresemptied90 sitesonThursdayinNewYorkCity19.Peoplewore sneakerswiththeirsuits20theyhadtoflyfastdownthe stairs.
恶性肿瘤对机体有何影响
WildBillDonovanwouldhavelovedtheIntemet.TheAmericanspymasterwhobuilttheOfficeofStrategicServicesinWorldWarⅡandlaterlaidtherootsfortheCIAwasfascinatedwithinformation.Donovanbelievedinusingwhatevertoolscametohandinthegreatgameofespionage--spyingasaprofession.ThesedaystheNetwhichhasalreadyre-madesucheverydaypastimesasbuyingbooksandsendingmailisreshapingDonovan’’svocationaswell. Thelatestrevolutionisn’’tsimplyamatterofgentlemenreadingothergentlemen’’se-mail.Thatkindofelectronicspyinghasbeengoingonfordecades.InthepastthreeorfouryearstheWorldWideWebhasgivenbirthtoawholeindustryofpoint-and-clickspying.Thespookscallitopen-sourceintelligenceandastheNetgrowsitisbecomingincreasinglyinfluential.In1995theCIAheldacontesttoseewhocouldcompilethemostdataaboutBumndi.ThewinnerbyalargemarginwasatinyVirginiacompanycalledOpenSourceSolutionswhoseclearadvantagewasitsmasteryoftheelectronicworld. AmongthefirmsmakingthebiggestsplashinthisnewworldisStraiffordInc.aprivateintelligence-analysisfirmbasedinAustinTexas.StraiffordmakesmoneybysellingtheresultsofspyingcoveringnationsfromChiletoRussiatocorporationslikeenergy-servicesfirmMcDermottInternational.Manyofitspredictionsareavailableonlineatwww.straitfordcom. StraiffordPresidentGeorgeFriedmansaysheseestheonlineworldasakindofmutuallyreinforcingtoolforbothinformationcollectionanddistributionaspymaster’’sdream.LastweekhisfirmwasbusyvacuumingupdatabitsfromthefarcomersoftheworldandpredictingacrisisinUkraine.Assoonasthatreportrunswe’’IIsuddenlyget500newIntemetsinge-upsfromUkrainesaysFriedmanaformerpoliticalscienceprofessor.Andwe’’11hearbackfromsomeofthem.Open-sourcespyingdoeshaveitsrisksofcoursesinceitcanbedifficulttotellgoodinformationfrombad.That’’swhereStraiffordearnsitskeep. Fridmanreliesonaleanstaffof20inAustin.Severalofhisstaffmembershavemilitary-intelligencebackgrounds.Heseesthefirm’’soutsiderstatusasthekeytoitssuccess.Straifford’’sbriefsdon’’tsoundliketheusualWashingtonback-and-forthingwherebyagenciesavoiddramaticdeclarationsonthechancetheymightbewrong.StraitfordsaysFriedmantakesprideinitsindependentvoice. Straiffordismostproudofits
YouwanttobuyaCADComputerAidDesignsoftwareyousawinaconference.Writealettertothemanufacturertoaskfor: 1detaileddescriptionofthesoftware 2paymentoptionsanddiscountsand 3timeandcostofdelivery. Youshouldwriteabout100wordsonANSWERSHEET2.Donotsignyourownnameattheendoftheletter.UseLiMinginstead.Youdonotneedtowritetheaddress.10points
Newsreportsoftenfocusondisputesamongscientistsoverthevalidityofpreliminaryuntesteddatahypothesesandmodelswhichbydefinitionaretentative.Thisaspectofscience-1becauseithasnotbeenwidely2andaccepted-iscalledfrontierscience.Themedia3tofocusonfrontiersciencebecauseitsso-calledbreakthroughsmakegoodnewsstories.Justbecausesomethingisinthe4offrontierscience5doesnotmeanthatitisn’’tworthyofseriousconsideration;6suchmattersneedfurtherstudytodeterminetheir7. 8contrastconsensusscienceconsistsofdatamodelstheoriesandlawsthatarewidelyaccepted.Thisaspectofscienceisveryreliablebutis9considerednewsworthy.Thetroubleisthatthewordscienceisusedto10bothfrontierandconsensussciencewithout11Themediapreference12frontiersciencegivesthepublicthe13impressionthatfrontierscience14verycertainconclusionswhichmayormaynotbecorrect. However15somefrontierscienceislatershowntobeunreliablemembersofthepublicoftenfalsely16thatconsensusscienceisalsoquiteuncertain.Weneedtotakebothfrontierandconsensusscience17butrecognizetheirdifferences.Onewaytofindoutwhatscientistsgenerallyagree18istoseekoutreportsbyscientificbodiesthatattemptto19consensusin20areasofscienceandtechnology.
坏死
Therelationoflanguageandmindhasinterestedphilosophersformanycenturies.61TheGreeksassumedthatthestructureoflanguagehadsomeconnectionwiththeprocessofthoughtwhichtookrootinEuropelongbeforepeoplerealizedhowdiverselanguagescouldbe. Onlyrecentlydidlinguistsbegintheseriousstudyoflanguagesthatwereverydifferentfromtheirown.Twoanthropologist-linguistsFranzBoasandEdwardSapirwerepioneersindescribingmanynativelanguagesofNorthandSouthAmericaduringthefirsthalfofthetwentiethcentury.62Weareobligedtothembecausesomeoftheselanguageshavesincevanishedasthepeopleswhospokethemdiedoutorbecameassimilatedandlosttheirnativelanguages.Otherlinguistsintheearlierpartofthiscenturyhoweverwhowerelesseagertodealwithbizarredatafromexoticlanguagewerenotalwayssograteful.63ThenewlydescribedlanguageswereoftensostrikinglydifferentfromthewellstudiedlanguagesofEuropeandSoutheastAsiathatsomescholarsevenaccusedBoasandSapiroffabricatingtheirdata.NativeAmericanlanguagesareindeeddifferentsomuchsoinfactthatNavajocouldbeusedbytheUSmilitaryasacodeduringWorldWarIItosendsecretmessages. Sapir’’spupilBenjaminLeeWhorfcontinuedthestudyofAmericanIndianlanguages.64BeinginterestedintherelationshipoflanguageandthoughtWhorfdevelopedtheideathatthestructureoflanguagedeterminesthestructureofhabitualthoughtinasociety.Hereasonedthatbecauseitiseasiertoformulatecertainconceptsandnotothersinagivenlanguagethespeakersofthatlanguagethinkalongonetrackandnotalonganother.65Whorfcametobelieveinasortoflinguisticdeterminismwhichinitsstrongestformstatesthatlanguageimprisonsthemindandthatthegrammaticalpatternsinalanguagecanproducefar-reachingconsequencesforthecultureofasociety.LaterthisideabecametobeknownastheSapir-Whorfhypothesisbutthistermissomewhatinappropriate.AlthoughbothSapirandWhorfemphasizedthediversityoflanguagesSapirhimselfneverexplicitlysupportedthenotionoflinguisticdeterminism.
Newsreportsoftenfocusondisputesamongscientistsoverthevalidityofpreliminaryuntesteddatahypothesesandmodelswhichbydefinitionaretentative.Thisaspectofscience-1becauseithasnotbeenwidely2andaccepted-iscalledfrontierscience.Themedia3tofocusonfrontiersciencebecauseitsso-calledbreakthroughsmakegoodnewsstories.Justbecausesomethingisinthe4offrontierscience5doesnotmeanthatitisn’’tworthyofseriousconsideration;6suchmattersneedfurtherstudytodeterminetheir7. 8contrastconsensusscienceconsistsofdatamodelstheoriesandlawsthatarewidelyaccepted.Thisaspectofscienceisveryreliablebutis9considerednewsworthy.Thetroubleisthatthewordscienceisusedto10bothfrontierandconsensussciencewithout11Themediapreference12frontiersciencegivesthepublicthe13impressionthatfrontierscience14verycertainconclusionswhichmayormaynotbecorrect. However15somefrontierscienceislatershowntobeunreliablemembersofthepublicoftenfalsely16thatconsensusscienceisalsoquiteuncertain.Weneedtotakebothfrontierandconsensusscience17butrecognizetheirdifferences.Onewaytofindoutwhatscientistsgenerallyagree18istoseekoutreportsbyscientificbodiesthatattemptto19consensusin20areasofscienceandtechnology.
Agreenhouseeffectwillraisetheearth’’stemperatureenoughbytheyear2100tocausedramaticclimatechangesincreasesealevelsanddisruptfoodproductionUnitedStatesscientistssaidthisweek. Theearth’’satmosphereisheatingataratethatcouldmeantemperaturerisesoftwodegreescentigradebythemiddleofthe21stcenturyandfivedegreescentigradebytheyear2100accordingtoareportissuedbytheUSgovernment’’sEnvironmentalProtectionAgencyEPA. SubstantialincreasesinglobalwarmingmayoccursoonerthanmostofuswouldliketobelievetheEPAsaid. Theagencysaidthefirsteffectsmightbefeltasearlyas1990becausetemperatureswouldberisingmorethanseventimesfastereachdecadebetweennowandtheyear2100thantheyhadbeenforthepast100years. TemperatureincreasesarelikelytobeaccompaniedbydramaticchangesinprecipitationandstormpatternsandariseinglobalaveragesealeveltheEPAreportsaid. Asaresulttheagencysaidagriculturalconditionswillbesignificantlyalteredenvironmentalandeconomicsystemspotentiallydisrupted. TheEPAreportsaidtheburningoffossilfuelswasdirectlyresponsibleformostoftheatmospherebuild-upofcarbondioxidebutthecurrentconcentrationissogreatthatevenaworldwidebanontheuseofsuchfuelswoulddelaythewarmingeffectforonlyafewyears. Awarmerclimatewillraisesealevelsbyheatingandexpandingtheworld’’soceansandcausingglacierstomelttheEPAsaid. Theagencyestimatedthatsealevelscouldriseanythingbetween48to380cminthenext120years. Anincreaseofeven48cmcouldfloodorcausestormdamagetomanyofthemajorportsoftheworlddisrupttransportationnetworksalterunderwaterecologysystemsandcausemajorshiftsinlanddevelopmentpatterns. Onestudycitedinthereportsuggestedthatiftheaverageglobaltemperatureroseby2.5degreescentigraderegionalclimaticconditionsmightbesimilartothoseduringthelastinterglacialperiod120000yearsago. Duringthisperiodoceanswerefivetosevenmetreshigherthantoday’’sfloodingtheshoresofEuropeandwesternSiberiaandmakingScandinaviaanisland. Theagencysaidthatwhilethewarmingtrendcouldhavesomebeneficialeffectssuchasreducingheatingcostsandimprovingclimateandgrowingseasonsinsomepartsoftheworldtherewouldbedifficultyinredirectingnationaleconomiestoadapttothenewclimatepatterns. TheEPAsaiditseemedunlikelythatthenationsoftheworldwouldreachaconsensusonsteptoreducecarbondioxideemissions.Insteaditurgedmoreresearchonthegreenhouseeffectandstressedtheneedforbetterplanningtocopewiththechangesthewarmingtrendisexpectedtoproduce. Thereportsaysthatiftheuseoffossilfuelswerebanned
Newsreportsoftenfocusondisputesamongscientistsoverthevalidityofpreliminaryuntesteddatahypothesesandmodelswhichbydefinitionaretentative.Thisaspectofscience-1becauseithasnotbeenwidely2andaccepted-iscalledfrontierscience.Themedia3tofocusonfrontiersciencebecauseitsso-calledbreakthroughsmakegoodnewsstories.Justbecausesomethingisinthe4offrontierscience5doesnotmeanthatitisn’’tworthyofseriousconsideration;6suchmattersneedfurtherstudytodeterminetheir7. 8contrastconsensusscienceconsistsofdatamodelstheoriesandlawsthatarewidelyaccepted.Thisaspectofscienceisveryreliablebutis9considerednewsworthy.Thetroubleisthatthewordscienceisusedto10bothfrontierandconsensussciencewithout11Themediapreference12frontiersciencegivesthepublicthe13impressionthatfrontierscience14verycertainconclusionswhichmayormaynotbecorrect. However15somefrontierscienceislatershowntobeunreliablemembersofthepublicoftenfalsely16thatconsensusscienceisalsoquiteuncertain.Weneedtotakebothfrontierandconsensusscience17butrecognizetheirdifferences.Onewaytofindoutwhatscientistsgenerallyagree18istoseekoutreportsbyscientificbodiesthatattemptto19consensusin20areasofscienceandtechnology.
Newsreportsoftenfocusondisputesamongscientistsoverthevalidityofpreliminaryuntesteddatahypothesesandmodelswhichbydefinitionaretentative.Thisaspectofscience-1becauseithasnotbeenwidely2andaccepted-iscalledfrontierscience.Themedia3tofocusonfrontiersciencebecauseitsso-calledbreakthroughsmakegoodnewsstories.Justbecausesomethingisinthe4offrontierscience5doesnotmeanthatitisn’’tworthyofseriousconsideration;6suchmattersneedfurtherstudytodeterminetheir7. 8contrastconsensusscienceconsistsofdatamodelstheoriesandlawsthatarewidelyaccepted.Thisaspectofscienceisveryreliablebutis9considerednewsworthy.Thetroubleisthatthewordscienceisusedto10bothfrontierandconsensussciencewithout11Themediapreference12frontiersciencegivesthepublicthe13impressionthatfrontierscience14verycertainconclusionswhichmayormaynotbecorrect. However15somefrontierscienceislatershowntobeunreliablemembersofthepublicoftenfalsely16thatconsensusscienceisalsoquiteuncertain.Weneedtotakebothfrontierandconsensusscience17butrecognizetheirdifferences.Onewaytofindoutwhatscientistsgenerallyagree18istoseekoutreportsbyscientificbodiesthatattemptto19consensusin20areasofscienceandtechnology.
WildBillDonovanwouldhavelovedtheIntemet.TheAmericanspymasterwhobuilttheOfficeofStrategicServicesinWorldWarⅡandlaterlaidtherootsfortheCIAwasfascinatedwithinformation.Donovanbelievedinusingwhatevertoolscametohandinthegreatgameofespionage--spyingasaprofession.ThesedaystheNetwhichhasalreadyre-madesucheverydaypastimesasbuyingbooksandsendingmailisreshapingDonovan’’svocationaswell. Thelatestrevolutionisn’’tsimplyamatterofgentlemenreadingothergentlemen’’se-mail.Thatkindofelectronicspyinghasbeengoingonfordecades.InthepastthreeorfouryearstheWorldWideWebhasgivenbirthtoawholeindustryofpoint-and-clickspying.Thespookscallitopen-sourceintelligenceandastheNetgrowsitisbecomingincreasinglyinfluential.In1995theCIAheldacontesttoseewhocouldcompilethemostdataaboutBumndi.ThewinnerbyalargemarginwasatinyVirginiacompanycalledOpenSourceSolutionswhoseclearadvantagewasitsmasteryoftheelectronicworld. AmongthefirmsmakingthebiggestsplashinthisnewworldisStraiffordInc.aprivateintelligence-analysisfirmbasedinAustinTexas.StraiffordmakesmoneybysellingtheresultsofspyingcoveringnationsfromChiletoRussiatocorporationslikeenergy-servicesfirmMcDermottInternational.Manyofitspredictionsareavailableonlineatwww.straitfordcom. StraiffordPresidentGeorgeFriedmansaysheseestheonlineworldasakindofmutuallyreinforcingtoolforbothinformationcollectionanddistributionaspymaster’’sdream.LastweekhisfirmwasbusyvacuumingupdatabitsfromthefarcomersoftheworldandpredictingacrisisinUkraine.Assoonasthatreportrunswe’’IIsuddenlyget500newIntemetsinge-upsfromUkrainesaysFriedmanaformerpoliticalscienceprofessor.Andwe’’11hearbackfromsomeofthem.Open-sourcespyingdoeshaveitsrisksofcoursesinceitcanbedifficulttotellgoodinformationfrombad.That’’swhereStraiffordearnsitskeep. Fridmanreliesonaleanstaffof20inAustin.Severalofhisstaffmembershavemilitary-intelligencebackgrounds.Heseesthefirm’’soutsiderstatusasthekeytoitssuccess.Straifford’’sbriefsdon’’tsoundliketheusualWashingtonback-and-forthingwherebyagenciesavoiddramaticdeclarationsonthechancetheymightbewrong.StraitfordsaysFriedmantakesprideinitsindependentvoice. Thephrasemakingthebiggestsplashline1paragraph3mostprobablymeans
Newsreportsoftenfocusondisputesamongscientistsoverthevalidityofpreliminaryuntesteddatahypothesesandmodelswhichbydefinitionaretentative.Thisaspectofscience-1becauseithasnotbeenwidely2andaccepted-iscalledfrontierscience.Themedia3tofocusonfrontiersciencebecauseitsso-calledbreakthroughsmakegoodnewsstories.Justbecausesomethingisinthe4offrontierscience5doesnotmeanthatitisn’’tworthyofseriousconsideration;6suchmattersneedfurtherstudytodeterminetheir7. 8contrastconsensusscienceconsistsofdatamodelstheoriesandlawsthatarewidelyaccepted.Thisaspectofscienceisveryreliablebutis9considerednewsworthy.Thetroubleisthatthewordscienceisusedto10bothfrontierandconsensussciencewithout11Themediapreference12frontiersciencegivesthepublicthe13impressionthatfrontierscience14verycertainconclusionswhichmayormaynotbecorrect. However15somefrontierscienceislatershowntobeunreliablemembersofthepublicoftenfalsely16thatconsensusscienceisalsoquiteuncertain.Weneedtotakebothfrontierandconsensusscience17butrecognizetheirdifferences.Onewaytofindoutwhatscientistsgenerallyagree18istoseekoutreportsbyscientificbodiesthatattemptto19consensusin20areasofscienceandtechnology.
Newsreportsoftenfocusondisputesamongscientistsoverthevalidityofpreliminaryuntesteddatahypothesesandmodelswhichbydefinitionaretentative.Thisaspectofscience-1becauseithasnotbeenwidely2andaccepted-iscalledfrontierscience.Themedia3tofocusonfrontiersciencebecauseitsso-calledbreakthroughsmakegoodnewsstories.Justbecausesomethingisinthe4offrontierscience5doesnotmeanthatitisn’’tworthyofseriousconsideration;6suchmattersneedfurtherstudytodeterminetheir7. 8contrastconsensusscienceconsistsofdatamodelstheoriesandlawsthatarewidelyaccepted.Thisaspectofscienceisveryreliablebutis9considerednewsworthy.Thetroubleisthatthewordscienceisusedto10bothfrontierandconsensussciencewithout11Themediapreference12frontiersciencegivesthepublicthe13impressionthatfrontierscience14verycertainconclusionswhichmayormaynotbecorrect. However15somefrontierscienceislatershowntobeunreliablemembersofthepublicoftenfalsely16thatconsensusscienceisalsoquiteuncertain.Weneedtotakebothfrontierandconsensusscience17butrecognizetheirdifferences.Onewaytofindoutwhatscientistsgenerallyagree18istoseekoutreportsbyscientificbodiesthatattemptto19consensusin20areasofscienceandtechnology.
TowhatextentaretheunemployedfailingintheirdutytosocietytoworkandhowfarhastheStateanobligationtoensurethattheyhaveworktodo Itisbynowincreasinglyrecognizedthatworkersmaybethrownoutofworkbyindustrialforcesbeyondtheircontrolandthattheunemployedareinsomesensepayingthepriceoftheeconomicprogressoftherestofthecommunity.Butconcernwithunemploymentandtheunemployedvariessharply.Theissuesofdutyandresponsibilitywerereopenedandrevitalizedbytheunemploymentscareof1971-2.RisingunemploymentandincreasedsumspaidoutinbenefitstotheworklesshadreawakenedcontroversieswhichhadbeeninactiveduringmostoftheperiodoffulleremploymentsincethewarendedtheDepression.Itlookedasthoughinfuturetherewouldagainbetoolittleworktogoroundsotherewereargumentsabouthowtoproducemoreworkhowtheavailableworkshouldbesharedoutandwhowasresponsibleforunemploymentandtheunemployed. In1972therewerecriticswhosaidthattheState’’sactioninallowingunemploymenttorisewasafaithlessactabreakingofthesocialcontractbetweensocietyandtheworker.Yetinthemainanycontributionbyemployerstounemployment―suchaslayingoffworkersinordertointroducetechnologicalchangesandmaximizeprofits―tendedtobeignored.Anditwastheunemployedwhowereaccusedoffailingtohonourthesocialcontractbynotfulfillingtheirdutytosocietytowork.Inspiteofgeneralconcernatthescaleoftheunemploymentstatisticswhentheunemployedwereconsideredasindividualstheytendedtoattractscornandthreatsofpunishment.Theircapacitiesandmotivationasworkersandtheirvalueasmembersofsocietybecamesuspect.OfallthemythsoftheWelfareStatestoriesofthework-shyandborrowershavebeentheleastwell-foundedonevidenceyettheyhaveprovedthemostpersistent.TheunemployedwereaccusedofbeingresponsiblefortheirownworklessconditionanddoubtswereexpressedabouttheState’’sobligationeithertoprovidethemwiththesecurityofworkortosupportthemthroughSocialSecurity. Underlyingtheargumentsaboutunemploymentandtheunemployedisabasicdisagreementaboutthenatureandmeaningofworkinsociety.TowhatextentcanorshouldworkberegardedasaservicenotonlyperformedbytheworkerforsocietybutalsomadesecurefortheworkerbytheStateandsupportedifnecessaryAndapartfromcasharetheresocialpressuresandsatisfactionswhichcauseindividualstoseekandkeepwork.sothattheworklessneedworkratherthanjustcash Theeffectofthe1971-2unemploymentscarewasto
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